Proceedings of the Symposium on Global and Environmental Monitoring: Proceedings of the Symposium on Global and Environmental Monitoring

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Persistent identifier:: 856665355

Title:: Proceedings of the Symposium on Global and Environmental Monitoring

Sub title:: techniques and impacts ; September 17 - 21, 1990, Victoria Conference Centre, Victoria, British Columbia, Canada

Year of publication:: 1990

Place of publication:: Victoria, BC

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 856665355

Language:: English

Document type:: Multivolume work

Volume

Persistent identifier:: 856669164

Title:: Proceedings of the Symposium on Global and Environmental Monitoring

Sub title:: techniques and impacts; September 17 - 21, 1990, Victoria Conference Centre, Victoria, British Columbia, Canada

Scope:: XIV, 912 Seiten

Year of publication:: 1990

Place of publication:: Victoria, BC

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 856669164

Illustration:: Illustrationen, Diagramme, Karten

Signature of the source:: ZS 312(28,7,1)

Language:: English

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: International Society for Photogrammetry and Remote Sensing, Commission of Photographic and Remote Sensing Data

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: [WP-5 LARGE SHARED DATABASES]

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: INSTITUTIONAL ANI) POLITICAL ASPECTS OF THE DEVELOPMENT AND USE OF LARGE SPATIAL DATABASES. Nancy Tosta

Document type:: Multivolume work

Structure type:: Chapter

492 INSTITUTIONAL ANI) POLITICAL ASPECTS OF THE DEVELOPMENT AND USE OF LARGE SPATIAL DATABASES Nancy Tosta State of California Teale Data Center PO Box 13436 Sacramento, California 95813-4438 ABSTRACT Several state agencies in California are currently using geographic information system (GIS) technology for a diversity of applications such as toxics assessments, transportation, planning, farmland mapping, and natural resource assessments. Many of the departments using the technology have acquired hardware and software, and are now compiling data to meet specific needs of individual programs within the agencies. Several of these efforts involve the development of large statewide data sets. Over the last two years, various ad hoc committees have identified data sets that are generic in nature and might be used by more than one agency. There are several examples of these, including roads, county boundaries, census tracts, and hydrographic features. The physical size of California, as well as its environmental diversity and population growth mean that any data set representing statewide spatial attributes at a scale greater than or equal to about 1:100,000 tends to be at least a few hundred megabytes in size. An example might be the TIGER files representing census spatial boundaries. These files for the state are approximately one gigabyte in size. Significant time and expense can be incurred in developing, analyzing, and maintaining these large files. There are no executive orders of specific legislative mandates that require state agencies to cooperate with each other in the use of GIS. In fact, in many instances a somewhat competitive relationship exists between agencies. The challenge of creating integrated, common spatial data sets, the development cost and use of which might be shared among state agencies, is institutional and political, rather than technical. Teale Data Centre, one of the state’s mainframe data processing centers, has the technical ability to manage large datasets and mechanisms in place to provide services to all state agencies. Teale, in conjunction with a few of the state agencies currently exploring the use of GIS, has begun to develop a digital library of "generic" spatial data. This paper will explore the arguments surrounding the data library approach to implementation of GIS and will examine issues inherent in developing, maintaining, and accessing spatial data among state agencies in California.

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